Electropure EDI for Producing Ultrapure Water for High Pressure Boilers in Power Plant

1.1 Advantages of EDI technology 

A mixed bed ion exchange unit has to be regenerated by using acid and alkali, but an EDI 

system does not need such a process. This is the fundamental advantage of EDI technology

 over the conventional ion exchange technology. However, this advantage can be expressed 

into other aspects as listed below. 

1. EDI process does not consume regeneration chemicals. 

2. EDI process does not create waste water and much more environmental. 

3. EDI systems do not require shutdown for regeneration.

4. EDI systems are smaller than mix bed ion exchange units.

5. EDI process provides water of consistent quality.

6. Operating expenses are lower than ion exchange units. 

1.2 Applications of EDI technology 

EDI typically may be used in any applications that require ultrapure water at a resistivity above 

1 MΩ·cm. The typical industries that use ultrapure water include: 

1. Microelectronic and semiconductor production. 

2. Pharmaceutical and biomedical industries. 

3. Chemical production. 

4. High pressure boiler such as the ones in power plants.